A Chrome extension (MIT, published on the Chrome Web Store) that turns a whole AI chat into one clean Markdown document. Compatible with ChatGPT. Long chats are virtualised by the host page — only the messages near the viewport exist in the DOM at any moment — so the extension walks the conversation as it scrolls, harvesting each message while it is mounted, then restores your original position. Every turn is labelled by role, formatting is preserved rather than flattened, and images can be saved alongside the text as a self-contained folder. It reads only the page you already have open: no account access, no API keys, no servers, and no analytics — a CI gate asserts on every commit that the shipped code makes no network, storage, or telemetry calls. The clipboard and your Downloads folder are the only destinations.